Dai-ichi Kogyo Seiyaku Co., Ltd.

Toshiyuki Nishitani

Masayuki Hashimoto

Toshikazu Nabeshima

Hajime Seino

Hiroyuki Kurahashi

Sachiko Inamasu

Tsuyoshi Uchibori

A surface active agent composition is prepared including: a polymerizable monomer surface active agent and a polymerizable dimer surface active agent represented by the following chemical formula. In the following chemical formula, R s each are independently an alkyl group having 8 to 30 carbon atoms, R s each are independently hydrogen or a methyl group, As each are independently an alkylene group having 2 to 4 carbon atoms or a substituted alkylene group, and ns each are independently an integer from 0 to 200. The surface active agent composition is capable of providing for an emulsion exhibiting excellent mechanical stability and polymerization stability, which in turn is capable of forming a film having sufficiently high adhesion and water resistance.

Surface active agent composition and emulsifying agent composition for aqueous resin dispersion

The decomposition reactive emulsifier of this invention is a compound of formula (I):

1,2 - Dioxolane decomposition reactive emulsifier and polymer-modifying method using the same

Sugar or sugar-alcohol fatty acid esters such as sucrose fatty acid esters are synthesized by incubating an aqueous mixture of a sugar or sugar-alcohol, a fatty acid and a catalytically active amount of a lipolytic enzyme, and recovering the resulting ester from the mixture.

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Oumihatiman, Japan

Toshiyuki Nishitani